docs: def force_on_satellite(position, mass):
      """Returns the total gravitational force acting on the body from the Earth and Moon."""
      earth_grav_force = gravitational_force(position, mass, earth_position, earth_mass)
      moon_grav_force = gravitational_force(position, mass, moon_position, moon_mass)
      F_x = earth_grav_force[0] + moon_grav_force[0]
      F_y = earth_grav_force[1] + moon_grav_force[1]
      return F_x, F_y